A friend who works for an aerial surveying company in Sacramento was going through company archives when he ran across an aerial photo of a City of SF derailment at Fulda, near Emigrant Gap on the Donner line. We're trying to determine when this was. The ground is clear with just a few small patches of snow visible. The power was Alco PAs running A-A-B-A. The two SP head-end cars are on their sides, and the first 3 or 4 cars of the train are daisy-chained across the tracks. The site is at the Fulda balloon track. The units appear to be in "Bloody Nose" rather than "Daylight" paint. Anyone have any info on when this might have occurred?